20" x 10mm Box XL Pro Lite Carbon Fiber BMX Race Fork - 1-1/8" Threadless - Black Reflective Stripe the B17 is a bike

the B17 is a bike seat designed for the 60° angled riding position

These pads will work with most old school brakes that use threaded pads

The Maxxis Holy Roller uses an inverted knob design making it a versatile performer from dirt to pavement

8mm (1-1/4")

etc) because it is a basic replacement part--not high end

20" x 10mm Box XL Pro Lite Carbon Fiber BMX Race Fork - 1-1/8" Threadless - Black Reflective Stripe the B17 is a bikeThe Box One XL Pro Lite Fork has the optimal balance of weight, strength and stiffness. Professional fork builders place every unidirectional carbon fiber strategically to optimize weight, strength, and stiffness. Designed with larger riders in mind, the Box One XS Fork features a 7000 series aluminum 1 1 8" steerer tube and standard 10mm cold forged bonded dropouts. A Box One Stem Lock is included. Material: High Modulus Unidirectional Carbon Fiber